"When push came to shove, the real Serena came out. And that's one of her best assets: When her back is against the wall, the best comes out," Barty said. "And that happened early in the second, and early in the third again."
In a momentum-boosting buildup to the Australian Open, which starts Monday, Kerber had wins over Lucie Safarova, No. 2-seeded Venus Williams, former Australian Open finalist Dominika Cibulkova and Camila Giorgi before beating Barty to claim her 11th career title.